Socialist MP for Brussels (1932–1957; 1961–1966)Foreign Minister (1936-1939; 1939-1940; 1954-1957)Prime Minister (1938-1939; 1946–1949)President of the UN General Assembly (1946)President of the Consultative Assembly of the Council of Europe (1949–1951)President of the ECSC Common Assembly (1952–1954)Chairman of a working party established at the 1955 Messina Conference and entrusted with the preparation of a report on the creation of a common European market (Spaak Report) (1955)Secretary-General of NATO (1957–1961)Deputy Prime Minister and Foreign Minister (1961–1966)